Director since 2014 Committees: None Experience Chief Executive Officer (April 2024-Present); President and Chief Executive Officer (April 2014-April 2024); President and Chief Operating Officer (January 2014-April 2014); Executive Vice President (2010-2014); Chief Financial Officer (2010-2014); Chairman of the Company s principal offshore marine transportation subsidiary (2012-2013); joined Kirby Corporation in 2010 Served in various operational and financial positions, FMC Technologies Inc., a global provider of advanced technology systems and products for the energy industry Employed by The Dow Chemical Company in manufacturing, engineering, and financial roles Education BS, Chemical Engineering, University of South Florida MBA, Tulane University Chartered Financial Analyst Other Boards/Organizations The Coast Guard Foundation, Director American Bureau of Shipping, Director UK Protection & Indemnity Association, Director Blue-Sky Maritime Coalition, Director Qualifications Mr. Grzebinski has primary responsibility for the business and strategic direction of the Company and is an essential link between the Board and the Company s day-to-day operations. He has overall knowledge of all aspects of the Company, its operations, customers, financial condition, and strategic planning. His experience at Kirby provides expertise in critical areas including Marine Transportation, Petrochemicals and Refining, Power Generation and Power Services, Oilfield Services, Commercial and Industrial, and Hydrocarbon Transportation , as well as Risk Management and Environmental, Safety Policies and Programs . Through his service at FMC and Dow, he has gained expertise in Public Policy, Finance, Science & Engineering, and Information Technology & Cybersecurity.